[FIXED] Insert Glyphs by Range Fails

I tried inserting some glyphs by range, but when I click the validate button the error message says that all glyphs exist and my input is erased. These glyphs do not exist in the font.
Error.png

Cdoublestruck-Hdoublestruck
elevencircled-twentycircled

Pcaps Error.png
Letterlike Symbols.png
Result.png
I tried with some that do exist:

a.pcap-z.pcap

Input.png
The error message, as expected, says that the glyphs already exist, but the text is not erased.

It should not have removed the lines, but the input is not correct, as only this syntax is supported:

By a single letter from A-Z, either uppercase or lowercase. For example:
[A.swash - Z.swash]
[a - z]

By up to 3 decimal digits in a contiguous run. For example:
[ampersand.01 - ampersand.58]

Thanks. Reading the help file is recommended here.

There were still some issues, which should be solved with the next upcoming release. We will also further improve the user manual.